Home / 28,564.52-39,431.77-18,879.81

Finding the Fourth Proportional to 28,564.52, 39,431.77 and 18,879.81

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Solution

The fourth proportional to 28,564.52, 39,431.77 and 18,879.81 is: 26,062.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,564.52 : 39,431.77 = 18,879.81 : x
  2. Step 2: Convert to fraction form
    28,564.52/39,431.77 = 18,879.81/x
  3. Step 3: Cross multiply
    28,564.52x = 39,431.77 × 18,879.81
  4. Step 4: Simplify right side
    28,564.52x = 744,464,398.45
  5. Step 5: Solve for x
    x = 744,464,398.45/28,564.52
  6. Step 6: Final answer
    x = 26,062.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.